• Open any QuickTime Movie and playback in sync or under external control. For non-standard codecs and high performance, a Quicktime video card is required. See list of common quicktime hardware. With a modern Dual CPU G4 macine and OSX, VirtualVTR can also be used without any dedicated Video hardware, playing back almost all codecs with software decompression, displaying picture on a VGA output, or via a video card with NTSC/PAL output from a desktop workspace.